﻿// Copyright © 2017 Paddy Xu
// 
// This file is part of QuickLook program.
// 
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;

namespace QuickLook.Converters
{
    public sealed class WindowStateMaximizedToThicknessConverter : DependencyObject, IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var zero = new Thickness();
            var def = parameter as Thickness? ?? new Thickness();

            if (value == null)
                return zero;

            var state = value as WindowState? ?? WindowState.Maximized;

            return state == WindowState.Maximized ? def : zero;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}